首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
1 IntroductionMultilevelmethodshavebecomesomeofthemostpopularmethodsforsolvinglargesystemoflinearequationsresultingfromthefiniteelementdiscretizationofpartialdifferentialequations.ThepioneerworkofmultilevelmethodsistheYserentant’sHierarchicalbasismeth…  相似文献   

2.
李瑞  梁庆文 《数学季刊》1999,14(1):55-61
§1. ForecastabouttheCarMarketDemandandtheQuantityofCarPossessioninOurCountryin2000Inthissection,weshallforecastthecarmarketdemandandthequantityofcarpossessioninourcountryin2000bymeansoftwostatisticsmethods,i.e.tendencyinferenceandregres-sionanalysis.…  相似文献   

3.
§1. IntroductionTheSaintVenantproposedthefamoussemi-inversesolutionmethod[1],thatsomeappro-priateassumptionstothedeformationshouldbemadebeforehandtofindthesolution,after-wardscheckingtheassumptionsbeingvalid.Thereafter,thesemi-inversesolutionbecomest…  相似文献   

4.
Theequivalencebetweencontinuityandboundednessofthelinearoperatorsonageneralprobabilisticnormedlinearspace(briefly,PNspace)wasdiscussedundersomehypotheses([1],Theorem2.4).Thepurposeofthispaperistodiscusstheequivalenceinthemuchmoregeneralsettingbymeans…  相似文献   

5.
张艳娥  王熙照 《数学季刊》1998,13(4):106-110
§1. IntroductionInthispaper,wewillconcernwithsolvingthesystemsoffuzzylinearequationsAx=bforx,whereAisamatrixoffuzzynumbers;xandbarevectorsoffuzzynumbers.In[2],usingthenewsolutionconcept,sixnewsolutionsaredefined.Thisdiscussionwasrestrictedtosq…  相似文献   

6.
Whenapplyingafuzzycontrolmethodoranintelligencecontrolmethodtoaneffectivecontroloveracomplexsystem,itissometimesnecessarytoidentifysystematicstructureandparameters.Mathematically,itisjusttheproblemsofuniversalfunctionalapproximationandfunctionapproxi…  相似文献   

7.
§0. IntroductionForaclosed4-manifold,itiswellknownthatanytwodimensionalhomologyclasscanberepresentedbyanembeddedsurface.Afundamentalproblemin4-dimensionaltopologyistofindasurfacewithminimalgenuswhichrepresentsthegivenhomologyclass.Aspecialcaseofthisq…  相似文献   

8.
§ 1.Introduction In [1 ] ,twooperatorclassesofD nearsubnormaloperatorsandnearsubnormaloperatorswereintroduced .TheelementarypropertiesofsuchoperatorswereobtainedbyuseoftheM Pgeneralizedinverse.Moreover,anewnecessaryandsufficientconditionforanoperatortobesubn…  相似文献   

9.
闫宝强 《数学季刊》1998,13(1):55-60
§1. IntroductionItiswellknownthatthedegreetheoryforak-set-contractoperatorhasmanyapplicationsontheexistenceofthesolutionsofsomeequations(see[1],[2],[3]).However,someopera-torsarenotk-set-contractoperators.Itisanewproblemthatweestablishadegreetheoryfo…  相似文献   

10.
高有  李文戈 《东北数学》2000,16(4):469-474
§ 1.Introduction In 1 961Carter[1]provedthatinanyfinitesolvablegroupGthereexistsself normalizingnilpotentsubgroups (Cartersubgroups) .TheconceptofCartersubgroupscomesfromtheconceptofCartansubalgebrainLiealgebra ,sothestudyofCartersubgroupsisveryimportantingrou…  相似文献   

11.
Thetheoryofharmonicmapsintoacompactnonpositivelycurvedtargetiswell-developed.TheexistenceofsuchaharmonicmappinginanygivenhomotopyclassisestablishedbyEellsandSampson[1]in1964,andlater,in1967,Hartman[2]gaveaproofoftheuniqueness.Thispaperisdevotedtoanapplicationo…  相似文献   

12.
ImplicationfiltersderivefromModusPoenesRuleinlogic.Itisveryimportanttostudylatticeimplicationalgebrasandthecorrespondinglattice-valuedlogicsystem.Inordertoin-vestingatelatticeimplicationalgebrasfromtheviewofanalysis,implicationfilterspacehasbeenestab…  相似文献   

13.
§1.IntroductionThetheoryofintegrableHamiltoniansystemsofinfinitedimensionshasundergonearapiddevelopmentsincethelate1960’s(seeashortsurveyin[1]andreferencestherein).BoththefiniteandinfinitedimensionalintegrableHamiltoniansystemshavebroadapplicationsinvariou…  相似文献   

14.
Inthispaperwecontinueourdiscussionin[5].Mainlywewillestablishaprioriestimatesforthelinearizedproblem(G),andthenprovetheexistenceofthesolutiontononlinearproblem.In§5wegivesometechnicalpreparations.Thenthewhole§6isdevotedtotheestablishmentofenergyestimates.I…  相似文献   

15.
§1.IntroductionandBackground  ThedistributiontheoryoverinfinitedimensionalGaussianspacehasbeendevelopedintwodirections:Givenadenselydefinednon-negativeselfadjointoperatorAintheHilbertspaceL2(R),bythewell-knownisomorphismbetween(L2),theHilbertspaceofsquarei…  相似文献   

16.
Itisknowntoallthatthetheoryofthepoint-countablecoversbeoneofthemostimpor-tantsubjectsinGeneralTopology.Thepoint-countablecoverswithvariouscharacterhavebeendiscussedbymanytopologists,suchasLinandTanaka’spaper[1]onpoint-countableK-network.Inthispaper,w…  相似文献   

17.
§1. IntroductionTheContinuousInductionofrealnumberisrewrittenasbelowinthispaper(Ⅰ).TheContinuousInduction(A):SupposethatPxisapropositionconcerningarealnumberx.Ifthereissomex0suchthatPxistrueforeveryx<x0,thenPxistrueforeveryrealnumberx.IfPxistruefore…  相似文献   

18.
§1.Introduction  SincethediscoverybyKorteweganddeVries(1895)andtheworkofZabuskyandKrustal(1965),therehavebeennumeroussignificantcontributionstotheKortewegdeVries(KdV)equationsandthesolitonsolutions,especiallythemethodofInverseScatteringTransformandthemethodof…  相似文献   

19.
§1.IntroductionTheTeichmülerspacesdiscussedinthispaperareinfinitedimensionalTeichmülerspaceswithcomplexstructure.Thisimpliest...  相似文献   

20.
§1. IntroductionIfD1,D2aretwosmoothboundedpseudoconvexdomainsinCn,D1satisfiestheconditionR(see[1]),itiswellknownthatanybiholomorphicmappingf:D1→D2extendssmoothlytotheboundary.Thisresulthasbeengeneralizedtothecasesofproperholomorphicmappings([2]).Inth…  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号